Patent US3153084A successfully refreshed from Google Patents.
US3153084A
Expired / Lapsed
US
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Vaporization of adipic acid and reaction thereof with ammonia to produce adiponitrile
Assignee: Monsanto Co
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Filing: 1960-09-08
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Granted: 1964-10-13
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Expires: 1980-09-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Veazey
- 👤 Wayne R Eberhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:53
CPC Classifications
B; B01; B01D; B01D1/00; B01J; B01J19/00; B01J19/0006; B01J19/0013; B01J19/24; B01J19/2415; B01J19/2425; B01J19/26; B01J8/00; B01J8/02; B01J8/06; B01J8/067; C; C07; C07C; C07C253/00; C07C253/22; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00044; B01J2208/00061; B01J2208/00106; B01J2208/00168; B01J2208/00212; B01J2208/00477; B01J2208/00495; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00119
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR THE VAPORIZATION OF ADIPIC ACID AND REACTION THEREOF ITH AMMONIA TO FORM ADIPONITRILE COMPRISING THE STEPS OF FLOWING A MOLTEN STREAM OF ADIPIC ACID THROUGH A SMALL OPENING AXIALLY INTO AN ANNULAR ZONE, ESTABLISHING A STREAM OF SUPERHEATED AMMONIA MOVING CONCURRENTLY AND CONCENTRICALLY WITH RESPECT TO THE STRESS OF ADIPIC ACID, EXPANDING AND HEATING THE CONCENTRIC STREAMS OF ADIPIC ACID AND AMMONIA TO VAPORIZE THE ADIPIC ACID, FLOWING THE THUS-EXPANDED MATERIAL OVER A DEHYDRATING CATALYST AT AN ELEVATED TEMPERATURE TO CONVERT THE ADIPIC ACID AND AMMONIA INTO ADIPONITRILE, AND CONDENSING THE THUS-PRODUCED ADIPONITRILE.
Claim 2
Dependent Claim
96 words
A PROCESS FOR THE VAPORIZATION OF ADIPIC ACID AND REACTION THEREOF ITH AMMONIA TO FORM ADIPONITRILE COMPRISING THE STEPS OF FLOWING A MOLTEN STREAM OF ADIPIC ACID THROUGH A SMALL OPENING AXIALLY INTO AN ANNULAR ZONE, ESTABLISHING A STREAM OF SUPERHEATED AMMONIA MOVING CONCURRENTLY AND CONCENTRICALLY WITH RESPECT TO THE STRESS OF ADIPIC ACID, EXPANDING AND HEATING THE CONCENTRIC STREAMS OF ADIPIC ACID AND AMMONIA TO VAPORIZE THE ADIPIC ACID, FLOWING THE THUS-EXPANDED MATERIAL OVER A DEHYDRATING CATALYST AT AN ELEVATED TEMPERATURE TO CONVERT THE ADIPIC ACID AND AMMONIA INTO ADIPONITRILE, AND CONDENSING THE THUS-PRODUCED ADIPONITRILE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |